In case you haven’t noticed, with the Firmware 1.5 update, a locked Beta of Focus Peaking was unlocked (limited) and now can be used with MF lenses, and in Manual Focus mode.
Here is a Video
You can only use “Art Filter/Key Lime II at the moment. And you must shoot in Raw+JPG…
Which is good, because you can change the Art Filter to not use it RAW in Viewer 2
Maybe Olympus will give us the FULL update before the Holidays.